/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Sets the all of the weights of the parents of a multi parent element
Returns true if changing the weight was successful
bool SetParentWeightArray ( [FRigBaseElement](API\Plugins\ControlRig\Rigs\FRigBaseElement) * InChild, const [TArray](API\Runtime\Core\Containers\TArray)< [FRigElementWeight](API\Plugins\ControlRig\Rigs\FRigElementWeight) > & InWeights, bool bInitial, bool bAffectChildren )